Separable multiple-wheel cycle

Abstract

A seperable multiple-wheel cycle includes an upper coupler operatively coupling or uncoupling a left top-tube portion of a top tube secured toward a rear wheel and a right top-tube portion of a top tube secured toward a front wheel, a lower coupler operatively coupling or uncoupling a left down-tube portion of rear wheel and a right down-tube portion of a front wheel and a wire coupler also operatively coupling or uncoupling a first wire secured to a brake or clutch fixed on a rear wheel and a second wire secured to a lever fixed on a front handle bar, so that the couplers can be operated to uncouple the front-wheel part from a rear-wheel part for breakdown uses, or to couple the front part with the rear part for assembling a cycle for running purpose.

What is claimed is: 
     
       1. A separable multiple-wheel cycle comprising: an upper coupling means operatively coupling or uncoupling a left top-tube portion of a top tube secured toward a rear wheel and a right top-tube portion of a top tube secured toward a front wheel;   a lower coupling means operatively coupling or uncoupling a left down-tube portion secured toward the rear wheel and a right down-tube portion secured toward a front wheel; and   a wire coupler operatively coupling or uncoupling a first wire portion secured to a brake or a clutch fixed on a rear wheel and a second wire portion secured to a brake or clutch lever on a front handle bar, the upper coupling means as coupled to said top tube being parallel to the lower coupling means as coupled to said down tube, the improvement which comprises:   said upper coupling means including: a core tube having a contracted diameter smaller than a diameter of the left top-tube portion formed on the right end of the left top-tube portion, a female bore formed inside a left end of the right top-tube portion engageable with the core tube, a male-threaded portion formed on the left end of the right top-tube portion corresponding to the inside bore, a first union rotatably mounted on the left top-tube portion as limited by a left lug formed on said left top-tube portion proximate to the core tube and having a female-threaded portion formed inside a cylindrical casing from a right end of the first union adapted for engaging the male-threaded portion of the right top-tube portion and having a male-threaded portion formed outside the casing from the right end of the first union, and a second union rotatably mounted on the right top-tube portion as limited by a right lug formed on the right-tube portion proximate to the male-threaded portion outside the bore and formed with a female-threaded portion inside a cylindrical casing from the left end of the second union adapted to engage with the male-threaded portion of the first union, the length of said core tube being at least two times of the diameter of said top-tube portion; and   said wire coupler including: a first wire portion movably jacketed within a first sheath secured to a brake or clutch fixed at a rear wheel of the cycle having a free end portion preferably having a length at least two times of the wire diameter and a left lug formed on the first wire proximate to its end portion; a coupler member formed on the left end of a second wire portion movably jacketed within a second sheath secured to a brake or clutch lever provided on the front handle bar, including a female hole formed on its left end engageable with the end portion of the first wire, a male-threaded portion formed on the left end of the coupler member, and a right extension formed on the right side of the coupler; a first-wire union having a female-threaded portion formed on a right end inside a cylindrical casing of the first-wire union engageable with the male-threaded portion of the coupler member and having a male-threaded portion formed outside the casing, rotatably jacketed on the first wire as limited by a left lug and rotatably secured to the first sheath by a first bellows rotatably and telescopically secured between the first-wire union and the first sheath; and   a second-wire union having a female-threaded portion formed on a left end of a cylindrical casing of the second union engageable with the male-threaded portion of the first union and rotatably jacketed on the second wire portion as limited by a right extension and rotatably secured to a second sheath by a second bellows rotatably and telescopically secured between the second union and the second sheath.